BU34DV7NUX Datasheet, PDF (20/27 Pages) Rohm – 1.8V to 5.5V, 300mA 1ch Synchronous Boost DC/DC Converter

BU34DV7NUX
Datasheet
●Notes of board layout
BU34DV7NUX is switching DCDC converter, so characteristics of noise and etc changing by board layout. Please note the
following respect besides a general board layout matter when you make PCB.
●About heat loss
In the heat design, please operate it in the following condition.
(Please consider the margin etc. because the following temperature is a guarantee temperature.)
1. Surrounding temperature Ta must be 85℃ or less.
2. Loss of IC must be permissible loss Pd or less.
The allowable dissipation (Pd) characteristics are described below.
2.1
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.4
0.2
0
0
25
50
75
100
125
TEMPARATURE(℃)
4layer(74.2×74.2mm）board
(1,4layer heat radiation copper foil：6.28mm ² ）
(2,3layer heat radiation copper foil：5500mm ² )
1layer(74.2×74.2mm）board
(Surface heat radiation copper foil：6.28mm ² ）
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TSZ22111・15・001
20/24
TSZ02201-0Q1Q0AH00100-1-2
02.Aug.2012 Rev.001